Answer:
2A-5=31
Explanation:
First Step:
Isolate the variable by adding the five. :)
Second step:
The problem should look like: 2A=36
Then isolate the variable further by dividing by the two to take it away from the A. Then, by rule of the method, you must do the same to the other side, so then divide the 2 from 36, and that should get you 18! :)